Solving 404 Page Not Found After Uninstalling WP No Category Base Plugin

Because I needed to remove WordPress’s Category, I installed the WP No Category Base plugin.

But because using the WP No Category Base plugin conflicted with my blog’s own issues, I uninstalled it.

After uninstalling, all pages on my WordPress blog showed 404 errors - page not found.

Neither Google nor Baidu had a solution. I downloaded the WP No Category Base plugin code and checked - it didn’t modify the database.

After simple speculation and verification, the solution is very simple:

1. Remember or save your current WordPress permalink settings.

2. Change WordPress permalink to any of the system defaults.

3. Change WordPress permalink back to your original settings.

OK, everything is normal now.